Another finding: When using the hashed IDs, in Final Cut Pro (10.3.4 i.e. latest) the keyframes cannot be displayed as graph. They only show as dots, that you can move along the time, but you need an extra step to change the value in the HUD sliders. Vs. if I use the legacy parameters, I can select a parameter and expand to the graph view: [Keyframes] The unfold right of the audio animation toggles the graph view. This switch was not present, when I used the hashed parameters. If you want to…